C语言实现九九乘法口诀表

`在这里插入代码片`#include#include#includeint main(){ system("color 73"); int a, b, c, d; d = 0; a = 0; while (a < 9) {  b = 1;  a = a + 1;  while (b <= a)  {   printf("%d*%d=%-2d   ", b, a, d = a * b);   b = b + 1;  }  Sleep (1000);  printf("          \n"); }}                                           【while】                     #include#includeint main(){ system("color 73"); int i, j, k; k = 0; for (i = 1; i <= 9; i++) {  for (j = 1; j <= i; j++)   printf("%d*%d=%-2d    ", j, i, k = j * i);  printf("   \n"); }}                                                   【for】